FFT(3)                          MathKeisan FFT                          FFT(3)



NAME
       fft - MathKeisan Fast Fourier Transforms


DESCRIPTION
       The  MathKeisan FFTs contain the same functionality as LIBSCI 3.1 (from
       Cray) and VECLIB (from Hewlett Packard). The interfaces  are  the  same
       with  one  exception:  the size of work arrays in MathKeisan LIBSCI are
       not the same as in the Cray LIBSCI.  There are FFT subroutines for 1-d,
       2-d, 3-d, and multiple 1-d.  The subroutines have data types complex to
       complex, real to complex, and complex to real. The  libraries  libfft.a
       and   libfft_64.a  are  serial.  The  libraries  libparfft.a  and  lib-
       parfft_64.a have OpenMP parallel subroutines for 2-d, 3-d, and multiple
       1-d.

       For  more information on a particular subroutine, see the man pages for
       one of the following:


                                   LIBSCI                   VECLIB

         1-d C-C              ccfft      zzfft         c1dfft    z1dfft
                               cfft       zfft         s1dfft    d1dfft
                              cfft2      zfft2
         1-d R-C, C-R         scfft      dzfft         crc1ft    zrc1ft
                              csfft      zdfft         src1ft    drc1ft
                             rcfft2     dzfft2
                             crfft2     zdfft2

         2-d C-C            ccfft2d    zzfft2d         c2dfft    z2dfft
                             cfft2d     zfft2d         s2dfft    d2dfft
         2-d R-C, C-R       scfft2d    dzfft2d         crc2ft    zrc2ft
                            csfft2d    zdfft2d         src2ft    drc2ft

         3-d C-C            ccfft3d    zzfft3d         c3dfft    z3dfft
                             cfft3d     zfft3d         s3dfft    d3dfft
         3-d R-C, C-R       scfft3d    dzfft3d         crc3ft    zrc3ft
                            csfft3d    zdfft3d         src3ft    drc3ft

        m1-d C-C             ccfftm     zzfftm          cffts     zffts
                              mcfft      mzfft          sffts     dffts
                            cfftmlt    zfftmlt
        m1-d R-C, C-R        scfftm     dzfftm         crcfts    zrcfts
                             csfftm     zdfftm         srcfts    drcfts
                            rfftmlt    dfftmlt

        generate tables      cftfax     zftfax
                             fftfax     dftfax

        error handler        xerfft




SEE ALSO
       MathKeisan User's Guide at:

              http://www.mathkeisan.com/

       The command:

              man mathkeisan

       gives more information on linking.





MathKeisan                                                              FFT(3)